Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/14617
Title: Effects of matric suction and dry density on the resilient modulus of compacted clay-sand mixtures
Authors: NG TECK GUAN
Keywords: clay-sand ratio, compaction, dry density, plasticity index, resilient modulus, unconfined compression strength, matric suction
Issue Date: 17-Apr-2005
Source: NG TECK GUAN (2005-04-17). Effects of matric suction and dry density on the resilient modulus of compacted clay-sand mixtures. ScholarBank@NUS Repository.
Abstract: In the current research, two sandy clay materials i.e. kaolinite-sand mixtures and bentonite-sand mixtures are compacted and tested in the laboratory to evaluate how their resilient modulus and unconfined compressive strength varies with different factors. The laboratory tests carried out are compaction tests, resilient modulus tests (AASHTO T307-99) and unconfined compression tests. The factors varied include different clay-sand ratio, soil plasticity index and different compaction moisture conditions i.e. dry, optimum and wet conditions. The filter paper method is used to measure the matric suction within the compacted specimens. A two step single layer compaction was employed for fabricating the test specimens. It was found that the method gave a more uniform density profile within the specimen than compaction in multiple layers recommended in AASHTO T307-99 or single step top-down compaction method. Lastly, graphs are plotted to identify any correlation between stiffness and strength of the soil.
URI: http://scholarbank.nus.edu.sg/handle/10635/14617
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